pre-intermediate classes 初等中级班
Honestly the harder classes that I'm in is... I'm in intermediate micro,
老实说，现在学习的比较难的课程是……中级微观经济学，
想学习宗教学 - SpeakingMax英语口语达人
You can sort classes by skill level (beginner, intermediate or advanced) and by trainer specialty (like brides-to-be, postnatal, exercise novices or elite athletes).
WSJ: The Digital Solution: Working Out With a Trainer and Friends via Webcam
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